What is Acid Blue 113 powder?
Xi'an Faithful BioTech Co., Ltd., located in Xi'an, the starting point of the ancient Silk Road, has grown into a global integrated fine chemical service provider, leveraging the region's advantages in logistics and the chemical industry. We go beyond mere product distribution; we have simultaneously established a comprehensive R&D and quality control system. For powder products such as acidic dyes, we conduct specialized tests on solubility, color fastness, and acid-base stability, providing complete Certificate of Analysis (COA) documentation for each batch. Acid Blue 113 powder, also known as weakly acidic navy blue 5R, dye index number C.I.26360, CAS number 3351-05-1, is a diazo-type water-soluble acidic dye. It appears as a deep blue ultrafine powder with a greenish sheen and a molecular weight of 681.65. This dye has good color affinity for proteins such as wool, silk, and nylon, as well as polyamide fibers. Dyeing and printing are typically performed in a weakly acidic bath environment of pH 5 to 7 and at a temperature range of 85 to 95 degrees Celsius. It can also be used in combination with direct dyes to dye wool-viscose blended fabrics. The finished product has a rich and full color, and exhibits stable fastness to washing, sunlight, and rubbing. It only slightly darkens upon contact with copper and lightens slightly upon contact with iron. In addition to its core applications in textile printing and dyeing, this product can also be used for coloring leather, paper, and feather crafts, and can also be used as a colorimetric reagent for laboratory specimens.
Acid Blue 113 powder Manufacturing Process
Acid Blue 113 powder is synthesized from metanilic acid, 8-anilino-1-naphthalenesulfonic acid, and other raw materials through two low-temperature diazotization and coupling reactions to form the dye matrix. After the reaction is completed, the alkali is adjusted and the temperature is raised, salt is added for precipitation, impurities are removed by pressure filtration and water washing, and the product is dried at low temperature, pulverized, and sieved to obtain ultrafine navy blue powder. After the finished product passes the tests for color, solubility, and other indicators, it is packaged, and the production wastewater undergoes unified decolorization treatment.
COA
| Test Item | Specification | Test Result |
| Appearance | Dark blue to black powder | Dark blue to black powder |
| Identification | IR spectrum consistent with reference standard |
Complies |
| Assay | 98.0%～102.0% | 99.42% |
| Loss on Drying | ≤0.50% | 0.18% |
| Residue on Ignition | ≤0.10% | 0.04% |
| Lead (Pb) | ≤10 ppm | <2 ppm |
| Arsenic(As) | ≤2 ppm | <0.5 ppm |
| Single Unknown Impurity | ≤0.10% | 0.05% |
| Total Related Impurities | ≤0.30% | 0.16% |
| Solubility | Soluble in ethanol | Complies |
| Conclusion | Conform with enterprise specification | |
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Molecular formula: C32H21N5Na2O6S2
Molecular weight: 681.649
Exact mass: 681.072876
PSA: 192.63000
LogP: 10.61020
Mechanism of action of Acid Blue 113 powder
Charge adsorption bonding: Dye molecules carry water-soluble sulfonic acid anions, which form ionic bonds with positively charged amino groups on the surface of wool and nylon fibers in a weakly acidic environment, resulting in rapid adsorption and dyeing.
Molecular hydrogen bond fixing: The dye macromolecules contain amino and hydroxyl structures, which can form hydrogen bonds with fiber molecules, improving colorfastness and reducing color fading during washing.
Van der Waals force penetration fixing: The long diazo molecular chains penetrate into the internal gaps of the fiber through van der Waals forces, forming a stable accumulation and giving the fabric a rich, deep blue hue.
Water-soluble dispersion dyeing: The sulfonic acid groups give the powder good water solubility, ensuring uniform dispersion of the dye liquor and guaranteeing even dyeing without spots on the fabric.
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Shipping Methods
| Transportation Time | Shipping method | Cargo weight requirements | Advantage |
| 3-7 days | DHL,Germany DHL,Germany DPD, UPS,USPS,FedEx,TNT,EMS |
Suitable for under 50kg. International door to door express |
We have warehouses in Germany and California, USA, and customers in Europe and America can enjoy sending goods directly from these two places. |
| 7-15 days | By Air | Suitable for more than 50kg. fast and cheaper for large order |
|
| 15-60 days | By Sea | Suitable for more than 500kg. Cheapest shipping way |
FAQ
01. Will metal ions affect the coloring effect of ACID BLUE 113?
Yes, contact with copper ions will darken the color, and contact with iron ions will lighten the color.
02. How does ACID BLUE 113 adhere to fibers?
Acid Blue 113 powder adheres firmly to protein and polyamide fibers through the combined action of ionic bonds, hydrogen bonds, and van der Waals forces.
03. How should ACID BLUE 113 be stored?
Store in a cool, dry place, away from strong acids, strong alkalis, and strong oxidizing agents.
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